A music player app designed to capitalize on the iPad's touch-and-swipe screen interface entered the market this week.

The Couch Music Player focuses on playlist creation and makes them fast, easy and fun to build. Users create song playlists by dragging and dropping song titles from their iPad music library into a playlist queue.

The Amazon Kindle is expanding its online reach with the new Send to Kindle Button.

Web surfers who find something they want to read later can send it directly to their Kindle e-reader or to mobile devices with the Kindle app, if the site has a Send to Kindle Button. They'll find it downloaded to their Kindle the next time they check in. For example, people who read Time online can now send articles to their Kindle.

Website owners can download the button for free. There's also a version for bloggers who use WordPress.

Here's some bad news for TV programmers: Weeknight prime-time TV watching time is also prime time for game playing and social networking, according to an Arbitron Mobile survey of 12,000 smartphone users.

The study followed five smartphone activities -- voice calls, browsing, messaging, social networking and gaming.

Peak times for playing online games and gaming apps and for posting updates on social networks was 7 to 10 p.m. Using the phone for voice calls peaked during business hours -- from 3 to 5 p.m. Other smartphone activities were more evenly spread throughout the day: 10 a.m. to 10 p.m. for browsing and 11 a.m. to 8 p.m. for messaging.